Countries such as Iran, Venezuela move oil in defiance of US by manipulating ships' GPS; Israeli head of maritime intelligence company: Companies use tech on 'astonishing' scale
Signal that has been interfering with airplanes in Israeli airspace is detectable from space, appears to come from new deployment of Moscow's electronic warfare systems
Airports Authority says it doesn't know what's behind the navigation interference, but problem hasn't caused safety issues; pilots association cites possible 'attack'
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